Arithmetic and control unit



FIG. 1 is a perspective view of front, top and right side of an arithmetic and control unit showing my new design;

FIG. 2 is a perspective view of rear, bottom and right side thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a bottom view thereof;

FIG. 9 is a cross sectional view taken along line 9-9 of FIG. 3;

FIG. 10 is a cross sectional view taken along line 10-10 of FIG. 3; and,

FIG. 11 is an enlarged view of the area 11 of FIG. 3.

The broken lines form no part of the claimed design. 

CLAIM The ornamental design for an arithmetic and control unit, as shown and described. 